Caledomina kohensis, Johanson, 2017

Johanson, Kjell Arne, 2017, Description of three new species of Caledomina (Insecta, Trichoptera, Ecnomidae) from New Caledonia, European Journal of Taxonomy 352, pp. 1-12 : 6

Caledomina kohensis sp. nov.

urn:lsid:zoobank.org:act:C659F3F5-8819-4F2F-887F-1EFA3423C49A

Figs 11–16 , 18–19

GV5 Caledomina sp. 1 – Espeland & Johanson 2010: 2116.

Diagnosis

Caledomina kohensis is distinguished from all other species in the genus by the almost straight sternal process of sternite IX and the dorsal branch of the superior appendage with a row of spines on the mesal face.

Etymology

Kohensis, named after the village Koh near the type locality.

Type material

Holotype

NEW CALEDONIA: ♂, Province Nord, W slope of Kugüö Mt , Xwé Wida Di Stream, 2 km E of Koh, 21°35.474' S, 165°50.776' E, 154 m, loc #036, Malaise trap, 20 Nov.–12 Dec. 2003, Johanson leg. ( MNHN, DNA voucher: NHRS-GV5 ).

Description

WINGS. Wing length unknown as body is lost.

GENITALIA. Total length about 0.5 mm. Segment IX divided into pair of strong, anteriorly rounded ridges in lateral view ( Fig. 11 ); sternite IX originating from anterior ridge below mid-height; broadening gradually posterad into sharply triangular plates with postero-dorsal sternal process ( Figs 11, 13 ); smooth. Sternal processes slender, almost straight, with large apical spine nearly one-fourth as long as sternal process ( Figs 11, 13 ); oriented posterad along their length in ventral view ( Fig. 13 ); reaching slightly beyond point of bifurcation of superior appendages ( Fig. 11 ). Tergite IX horseshoe-shaped in lateral view ( Fig. 11 ), anterodorsal corners almost straight, oriented antero-dorsally; central part with long setae on lateral faces; in dorsal view ( Fig. 12 ) with anterior-most part fused mesally, forming an undulating band; posterior part divided into broad branches ( Fig. 11 ). Tergite X small, membranous, present above posterior apex of tergite IX in lateral view ( Fig. 11 ); in dorsal view divided into two lobes associated with branches of tergite IX; with posterior and mesal setae ( Fig. 12 ). Superior appendages large; each divided into posterior dorsal and ventral lobes ( Fig. 11 ). Dorsal lobes oriented posteriorly, smooth except with series of long spines oriented mesally ( Fig. 12 ). Ventral lobes originating gradually from anterior part of each tergite IX; nearly straight along their length; basal half of ventral face covered by minute spines ( Fig. 13 ); each with posterior half slightly curving mesally and partly overlapping near apices; covered with setae; slightly exceeding dorsal lobe in length ( Fig. 11 ). Inferior appendages completely fused into small, mesal process, connected to central part of sternite IX by sclerotized ridges ( Fig. 11 ); dorsal margin slightly sigmoid; ventral margin convex; apex long, narrow in lateral view ( Fig. 11 ); in ventral view ( Fig. 13 ) with broad basis; narrowing strongly at one quarter its length, apex smooth, bifurcated. Phallic apparatus ( Figs 14–15 ) with weakly developed ventrally pointed lobe ( Fig. 14 ); irregularly tube-shaped; dorsal margin strongly narrowing at anterior one-third; posterior apex membranous.

Remarks

This species was referred to as “GV5 Caledomina sp. 1” in Espeland & Johanson (2010).

Figures

Figs 11–15. Caledomina kohensis sp. nov., holotype, adult ♂. 11. Genitalia, lateral view. 12. Genitalia dorsal view. 13. Genitalia, ventral view. 14. Phallus, lateral view. 15. Phallus ventral view. Scale bar = 0.1 mm.

Fig. 16. Map of New Caledonia with collecting sites of Caledomina indicated. Caledomina paniensis sp. nov. (black square), C. dorsospina sp. nov. (black triangle), C. kohensis sp. nov. (black filled circle), C. noumea Johanson, 2011 (red stars).

Figs 17–18. Type localities with Malaise traps. 17. Type locality of Caledomina dorsospina sp. nov. 18. Type locality of Caledomina kohensis sp. nov.

Fig. 19. Phylogenetic relationship among species of Caledomina, with morphology of male genitalia in lateral view to the right.